.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 50px;
  background-color: white;
  border-top: 1px solid #eee;
  z-index: 100;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: #666;
  flex: 1;
  height: 100%;
}

.tab-item.active {
  color: #1890ff;
}

.tab-icon {
  font-size: 20px;
  margin-bottom: 2px;
}

.tab-label {
  font-size: 12px;
}

/* 悬浮发布按钮 */
.fab-post {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -30%);
  width: 54px;
  height: 54px;
  border-radius: 50%;
  border: none;
  background: #1677ff;
  color: #fff;
  box-shadow: 0 8px 20px rgba(22, 119, 255, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.fab-pencil {
  font-size: 24px;
}